公开(公告)号：US10217469B2

公开(公告)日：2019-02-26

申请号：US14769998

申请日：2014-02-25

Applicant: INSTITUT MINES TELECOM

Inventor： Sebastien Fenet ,  Yves Grenier ,  Richard Gael

IPC: G10L19/018 ,  G06F17/30 ,  G10L25/54 ,  G10H1/00 ,  H04H60/37 ,  H04H60/58

Abstract: The invention concerns a method for generating a signature of a musical audio signal of a given duration, the method comprising the following steps: —modelling (104) the musical audio signal to obtain, for each frequency band of a set of n frequency bands, a diagram representing the energy of the audio signal for the frequency band, on the basis of the time during said given duration; —determining (103) musical transition times tk of the audio signal during the given duration; —associating (105) each musical transition time tk with an item of local information comprising a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a subsequent musical transition time tk+1 and/or a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a preceding musical transition time tk−1; —determining (106), on the basis of the local information associated with each musical transition time tk, a key associated with the musical transition time, the determined keys forming a first set of keys of the audio signal; —generating (107) a signature of the musical audio signal comprising pairs of keys from the first set of keys and associated musical transition times tk.